Harry rowatt brown



{No Model.)

Y. H. R. BROWN.

GAGE;

Palsented 0012.5, 1897.

WITNESSES A TTOR/VE m nms PETERS co. mowuma. wasnmaruu ment.

UN ED STATES PATENT OFFICE.

HARRY ROWATT BROWN, or MINNEAPOLIS, MINNESOTA.

GAGE.

SPECIFICATION forming part of Letters Patent No. 591,342, dated October 5, 1897.

Application filed October 9, 1896. Serial No. 608,385. (No model.)

To in whom it may concern:

Be it known that LHARRY ROWATT BROWN, a citizen of the United States, and a resident of Minneapolis,county of Hennepin,and State of Minnesota, have invented certain new and useful Improvements in Gages, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to that class of gages which are adapted to be used in setting or adjusting the knives of the cutter-heads of molding-machines; and the object of my invention is to provide a simple and improved gage of this character which ,will be adapted for quickly and effectively setting ordinary knives on the ordinary form of cutter-heads of any molding-machines.

Gages have heretofore been designed to enable the accurate adjustment of the knives upon special or specific forms of cutter-heads, but such gages are not adapted for general effective use upon the various forms of cut-' ter-heads now commonly in use.

It is the purpose-of my present invention to provide an improved gage especially adapted for this general use upon the various forms of cutter-heads which are commonly employed in molding-machines.

In the drawings, Figure 1 is a perspective view showing my improved gage in position upon an ordinary cutter-head. Fig. 2 is an edge view of the gage. Fig. 3 is a face view. Fig. l is an end view. Fig. 5 is a face view illustrating an attachment adapted to be employed in the setting of milled knives. Fig. 6 is an end view of said attachment. Fig. 7

is an edge view showing the attachment'in position upon the gage.

In the setting of ordinary knives upon the ordinary forms of cutter-headsmuch difficulty and loss of time is now generally. experienced. Ordinarily the knife is first set in a position assumed to be accurate, and the machine is then started to test the adjust- This'operative test enables further adjustment of the knife, when the machine is again started to enable further test. This process of adjusting the knives by repeated tests as to the accuracy of their position is as ordinary knives are.

vided at one end with an arm or bracket D,

projecting laterally at right angles to the rule and provided at its inner edge with a lip cl,

forming a shoulder d.

Upon the rule 0 is provided a transverse slide E, having a slot e, receiving said rule. One end of this slide projects laterally from the rule and at right angles thereto to form an arm E, corresponding to the fixed arm D at the opposite end of the rule and similarly provided at itsinner edge with a lip 6', forming a shoulder 6 The opposite end E of the slide projects laterallyfrom the rule 0, as

shown, and carries a set-screw F, working in said projecting end at right angles to the rule and adapted to secure the slide in position upon the latter.

To prevent the end ofthe set-screw F from marring the edge of the slide E, a shoe or washer G is interposed in the slot 6 between the end of the screw and the edge of the rule, (see Figs. 2,3, and 4,) the ends of said shoe or strip being turned up at right angles, as shown at g, to lock the same in connection with the slide.

H designates a set-screw which works transversely in the projecting end E of the slide at right angles to the set-screw F. The end h of thisscrew is preferably pointed, so that it will indent the cutter-head and thus provide a more secure hold.

I designates an attachment which is designed to be placed upon the rule 0 and employed in the setting of milled knives. In this connection it will be understood that milled knives are beveled and are sharpened from the under side instead of from the top,

The face of the attachment I is therefore suitably inclined or beveled, as shown at 1', and said attachment is provided with downwardly-proj ecting pins or studs 2" upon its bottom, which enter corresponding openings 2' (see Fig. 1) in the rule 0, to provide for the connection of the attachment with the rule. The position of said attachment with relation to the rule is shown by dotted lines, Fig. 1. In the employment of this attachment it will be understood that the beveled or sharpened under edges of the milled knives will abut against the inclined face i of the attachment instead of lying over the rule, as will be the case of ordinary knives, as shown in Fig. 1.

The inclined face i of the attachment I is provided with a suitable scale or graduations similar to the graduations upon the face of the rule C.

In practice the rule 0 is first set squarely on the cutter-head A and the slide is adjusted to the length of the head, permitting the lips (Z and e to rest squarely 011 the latter. The slide is then fastened in adjusted position upon the rule by means of the set-screw F.

The device is fastened in position upon the head by means of the set-screw H. After adjustment of the gage with relation to the cutter-head is effected, as above set forth, the gage can then be placed on any side of the head by operation of the said set-screw II, without releasing the set-screw F or destroying the relative adjustment of the slide and rule C.

It will be understood that my improved gage is also adapted for readily and conveniently setting all forms of straight knives on molders, planers, or other machines.

The face of the rule 0 is marked with a suitable scale or graduations 7c, which may be arranged as desired, without departing from the scope of my invention, but I prefer to employ the scale herein illustrated, embodying three distinct longitudinal parallel sets of graduations, respectively divided into inches and fractions thereof, in combination with a series of longitudinal parallel lines or graduations, which latter form a transverse scale for use in adjusting the depth of the cut. Relatively the width of the rule 0 is preferably one inch and the transverse series of graduations is marked with fractional divisions extending transversely across the rule. The longitudinal parallel sets of graduations are marked longitudinally with divisions into inches or fractions thereof.

It will be noted that the relative arrangement of the fractional divisions, one-fourth, one-half, and three-fourths, of the transverse scale are so arranged that they indicate the same relative distances counting from either side edge of the scale, which arrangement materially facilitates the convenient adjustment of the knife to effect the desired depth of cut.

In the setting or adjustment of the knife any one of the three longitudinal sets of graduations' may be employed. Thus if the knife in its adjustment should cover the lower series of graduations it could be set by the central or intermediate series, or if the knife should cover both the central and lower series then it could be set by the top series of graduations. This combined arrangement of multiple longitudinal sets of graduations in connection with a transverse scale enables the very quick and convenient attachment of the knife, both in its proper position and its relation to the depth of cut desired, without confusion and in absolute accurate manner. I prefer to correspondingly divide the three longitudinal scales and the transverse scale into graduations representing one-sixteenth of an inch.

\Vhen it is desired to set or adjust two knives of the same pattern on each side of an ordinary cutter-head, it is practically impossible to accurately adjust such knives in perfeetly correlative position with an ordinary rule, and such adjustment is largely a matter of guesswork and repeated test before any approximate degree of operative adjustment is secured; but my improved gage enables a rapid and accurate adjustment of the knives upon any ordinary cutter-head used in the ordinary molding-machines.

My improved gage can be readily, conveniently, and securely attached to the head, so that both hands of the operator may be employed in the placing and securing of the knife in adjusted position. The rule when the gage is secured in place upon the cutterhead lies flush with the top of the head, with its graduated face exposed, so that the molding portion or end of the knife rests directly upon the graduated scale and can be immediately set into accurate position.

A special feature and advantage of my improved gage is that a similar knife can be immediately and conveniently set in a precise correlative position on the opposite side of the head.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A gage of the class described, comprising a rule provided with a graduated face and having a laterally-projecting arm provided with a lip and a shoulder at one end, and a slide transversely mounted upon said rule and having a projecting end corresponding to the fixed arm of the rule, said slide carrying means for securing it in adjusted position upon the rule and means carried at its proj ecting end for securing the device in position upon a cutter-head, substantially as and for the purpose set forth.

2. An improved gage of the class described, comprising a rule provided with a graduated face and having a laterally-projecting arm at one end, and a slide transversely mounted upon said rule and having a projecting end provided with a lip and a shoulder and corresponding to the fixed arm of the rule, said slide carrying a set-screw in its opposite end at right angles to the rule for securing the slide in adjusted position upon the latter, said slide being provided with a shoe G, and a set screw transversely arranged in the projecting end'of the slide for securing the device in position upon a cutter-head, substantially as shown and described.

3. An improved gage of the class described, comprising a rule provided with a graduated face and having an arm projecting laterally at one end at right angles to said rule, the

inner edge of said arm being provided with a lip and shoulder, a slide transversely mounted upon said rule and projecting at opposite sides of the same, one projecting end of said slide corresponding to the fixed arm of the rule and having its inner edge correspondingly provided with a lip and shoulder, a setscrew working in the opposite projecting end of the slide at right angles to the rule, and a set-screw working transversely in the projecting arm of the slide at right angles to the fixedarm of the rule, substantially as and for the purpose set forth.

4. As an improvement in gages of the class described, the combination, with a graduated rule provided at one end with a projection adapted to form a rest upon and against the end of a cutter-head, of an adjustable slide mounted transversely upon said rule and adapted to be secured in adjusted position,- said slide having a projecting portion comprising a lip and shoulder, adapted toform a rest upon and against the opposite end of a cutter-head, and means for locking the device in position upon the cutter-head, substanpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 5th day of OCtO: ber, 1896.

HARRY ROWATT BROWN.

Witnesses:-

CYRUS W. WELLS, J AS. 0. MILLARD. 

